 
    (defsynth sonic-pi-tri [note 52
                            note_slide 0
+                           note_slide_shape 5
+                           note_slide_curve 0
                            amp 1
                            amp_slide 0
+                           amp_slide_shape 5
+                           amp_slide_curve 0
                            pan 0
                            pan_slide 0
+                           pan_slide_shape 5
+                           pan_slide_curve 0
                            attack 0.1
                            decay 0
                            sustain 0


   (defsynth sonic-pi-mod_dsaw [note 52
                                note_slide 0
                                amp 1
                                amp_slide 0
                                pan 0
                                pan_slide 0
                                attack 0.01
                                decay 0
                                sustain 0

  (defsynth sonic-pi-fx_replace_rlpf
    [amp 1
     amp_slide 0
     amp_slide_shape 5
     amp_slide_curve 0
     mix 1
     mix_slide 0
     mix_slide_shape 5
     mix_slide_curve 0
     pre_amp 1
     pre_amp_slide 0
     pre_amp_slide_shape 5
     pre_amp_slide_curve 0
     cutoff 100
     cutoff_slide 0
     cutoff_slide_shape 5
     cutoff_slide_curve 0
     res 0.6
     res_slide 0
     res_slide_shape 5
     res_slide_curve 0
     out_bus 0]
    (let [amp           (varlag amp amp_slide amp_slide_curve amp_slide_shape)
          mix           (varlag mix mix_slide mix_slide_curve mix_slide_shape)
          pre_amp       (varlag pre_amp pre_amp_slide pre_amp_slide_curve pre_amp_slide_shape)
          cutoff        (varlag cutoff cutoff_slide cutoff_slide_curve cutoff_slide_shape)
          cutoff        (midicps cutoff)
          res           (varlag res res_slide res_slide_curve res_slide_shape)

          [in-l in-r]   (* pre_amp (in out_bus 2))
          [new-l new-r] (rlpf [in-l in-r] cutoff res)
